Shedding mechanism for looms.



E.H.RYON. ySHEDDING MECHANISM FOBLOOMS.

' APPLICATION rum) JULY 25, 1912. 1,068,822

Patentgd m 29, 1913.

-s MEETS-SHEET 1.

WWW/am mud/b.

E. H. RYON.

Patented July 29, 1913.

H- 3 SHEETS-SHEET 2.

SHEDDING MECHANISM-FOR L QQMS. o APPLIGATION FILED JULY 25, 1912. L@,822.

L. if. RYULX. SHEDDING MECHANISM FOR LOOMS. APPLIGATION 'I-ILED JULY 25, 19 2.

1,068,822. Patented July 29, 1913.

a SHEETS-SHEET sv 50 reamoftheldobb UNITED SIAT;@;S,1?ATENT GFFICEQ is; l'wieli ll ml 1; rowe -keeper Taqill igkhfliifihadg f i .B it now t EPPH- RYON citizen of--'- the United "States,- residing 'at altham,- in the county o-t'Mi ddlesex and 5 *-State of -Massachnse'tts, have invented certain-n'ew andn'sefullmprovements in Shed- Meclianism for.{"Looms, of which the following "is a specification.

. fio nisni re is'npi-iiii, 190s. 1

- My invention relates-to shedding. mechalooms',"and more partictilarlyto a Y "so ternied, and the object of my invention is to improve upon the construchomer the (lobby shown and-jgdescribed in Uf. S; Letters Patent, No. 884 613, dated My. invention cor'isists in certain novel feat-iiresjo f construction ofmy improvemerits aswill be hereiiiafterfully described.

The dohby 'ofthe type referred'to is,proew with 'a vertically extending rock shaft i ally extending 1 dohhy franie, wlfi'ch h evel gear segment is ineshwith fand operates a bevel gear on one of the Vertically extending rock shafts at the rear of the dobby, isaid vertically extending 40 "rock shaftjis provided with two crank arms,

which .arejsuitably' connected; to. the lifter bars 'on one end thereof. Thejother ends of vthel lifterbars or reciprocating knives are pivotally mounted 'ome stand, which wSlecu redto the-front (lobby, and e gtends back, 'acorre g- -Llhro igh. the operatic .qutite ln It will be seen that'thejino" enientffffthe if rbe tl h than tibiiie spending with front to' th J o shed desiredir J Specification otIiettersil l atent.

n pntanmlfiieuuly zsjielet senal 110.711392.

mg rotary motion is communicated "In iiiiproived cons no (more .dobby, .I'do away withflthe ho transverse shaft, li'avin gftwo beve ggear seginents' thereon, and have one bevel gear seg-- 85' ment', preferably located atthe rear of the ca esai eh me es 3 EPI'A H; BYON,--OF wnnrnlul MASSACHUSETTS, ns'sien on TO onomrron & KNOWLES massaenu sens - Paataaiya, e13.

'rocksha'ft a simultaneous movement is imparted to the reciprocating lmives'gr lifter bars,'wh1ch 1n this instance. is un'qi al in extent in comparison'to the more'jor less throw of the'harnesses, in the rear, and in front of the'loom. I also provide improved dobhy fingers or levers, each one of which is adapted to operate inunison the upper and lower hooks, and which have in this instance two different or double runs for the pattern indication. By this means a double indeX. 'chain may be used, the chain cylinder being timed to bring one set of indicator pegs under oneset of runs for one pick, and the other set of indicator pegs for the other set of rims for the next pick.

The dobby may be changed to single index by simply changing the indicator fingers,

and the time of the pattern cylinder, so that,

a new chain bar is brought underthe indicato'r levers for each pick.

I have only shown in the drawings a de- "t-ached portion of a dobby of the type above referred to, with my improvements combined 4 therewith, sufficient to enable those skilled in the art to understand the construction and operation thereof. j

Referring to the drawings :Figure 1 is a rear elevation of portions of a 'dobby of the type above referred to, with my improvements applied thereto. Fig. 2. is a section, on line 2, 2, Fig. 1, looking in the directionof arrow a, same figure, and how ing thedriving mechanism of the vertically extending rock'shaft- Fig. 8 is a plan view and section, on line 3,3, Fig. 1,1ookingin the direction of arrow 6, same figure. Fig.-

4 corresponds toFig. -3, hutshows the lifter b arsin theirop'posite position. Fig. 5 is a section, on lin'e5, 5, Fig. 3, looking in' the direction of arrow 0, same figure, and showing the harnessjack or lever, and hooks,

andothe'r parts, detached. Fig. 6 shows, on an enlarged scale, a side view ot a fdobby [finger detached, and, Fig.1 is an edge iew of the dob'by finger shown in Fig. 6, looking .in thedirectionzof arrow (5', same figure.

In, the accoiiipanying drawings, ,1 is the Linea do by.. ame-a d l hi hn. n'

t oii with et an -2 iflie. fie see Fi adapted to" support... v he. setteral fi'ingthe nsualgwia'y. 3. ish n d of the shaft 4,- which fast on the rotary shaft 6, .which turns in. beta-r upper end of the upright shaft 10, which is supported at its upper end in a bearing and has azrotary, movement communicated thereto from some driven part of the loom, not shown. v v 10 The shaft 4, see Fig. 5, has mountedthereon the 'patternchain cylinder 11, which carries the pattern chain 12, made up of bars linked together, and provided with pins or pegs 13, to engage or move the indicator fingers or levers 14, in the usual way.

The indicator fingers or levers 14 are pivotally supported on the transverse rod 15, see Fig. 5, to extend over the pattern chain cylinder 11 attheir outer ends, in the'usua-l way. At their inner ends the pattern indicator fingers are provided in this instance with two arms 14, and 14 which are offset relative to each other, as shown in Fig. 7.

I 4 The lower arm'14 has a recess 14* therein, -see'Fig. 6, to receive the lower end of an upright wire 16, see Fig. 5, which extends under and engages an upper hook 17 The inner end of the arm 14 has an upper projection 14" thereon, see .Fig. 6, which ex- 0 tends under and engages directly with the 'low'er'hook 18, see Fig. 5, The upper set of hooks 17 are moved-longitudinally by a horizontally moving lifter bar or knife 19, and the lower set of hooks are moved long'i-. tudinally by a horizontally moving lifter bar or knife 20. The lower'h00k'18 is pivot- .ally attached at its inner end to the lower end of a harness lever 21, at its lower fulcrum point, which consists of a transverse 4o angle shaped bar 22,- forming a part of and secured to the dobbyframes 1 and 2, and having outwardly extending projections 22 thereon, which act as a comb for guiding and keeping in proper. positionthe lower ends of the harness levers 21, which have the down wardly extending projections 21 thereon, which extend between said projections 22, see' Fig. 5. The other fulcrum point for the harness levers 21 is located intermediate the ends of the harness levers 21, and consists in this instance of a transverse bar 23, see Fig. 5, which is secured to the front and rear frames 1. and 2 of the dobby; each harness lever 21 has an open end slot or recess 21 on its inner edge, to receive the transverse bar'23, which, extends through said recess 21". Near the inner end of the recessed portion 21" is pivotally attached'to the harness lever 21,,the inner end of the :10 upper hook 17, which is adapted to be'oper-' ated by the upper lifter bar or knife 19.

, Each harness lever 21 has a pivotal movement on either-one of its two fulcra'. All of the above mentioned parts, except as the pattern indicatonfingers l4. mav be ofreferred to,

. dobby frame.

the construction, shown and described in U. S. Letters Patent, 884,613, above Iwill' now describe my improvements.

Secured to the dobby frame 2and extend- Ing outwardly therefrom, is a stand .24, on which are pivotally mounted, ona stud- .25 the hub'of the upper knife or lifter bar--19,

- and also the hub, not shown, of the lower knife or lifter bar 20, see Figs. "3 and 4. The lifter bars 19 and'20 have a simultaneous reciprocating movement in the,

same direction in a horizontal plane, in the slots 1' -and 1", see Fig- 1, 1n the framel,

and also in the upper slot 2- and lower 'slot' not shown, in the frame'2.

To the opposite freeend of the upper lifter bar 19 is pivotally attached, by a pin- 26, .a yoke shaped or bifurcatedrod head 27 adjustable on the outer end of a rod'27, see-Fig. 1-. The. other end of-the rod- 27 is pivotally attached. to a pin'or stud .248,

' see Fig. 4, which is adjustably secured in an elongated slot 29' in thecrank arm 29,- on the upper endofa vertically extending. rock shaft 30, see Fig. 1, supported,;andhaving "a rocking or reciprocating rotary motion in bearings 31 secured to the rear dobb'y frame" 1. On the lower end of the rockl's haft 30 is a second crank arm 32, extending in this instance in the same direction as the upper arm 29, and having an elongated slot therein to .adjustably receive a stud 33, see Fig. 1,

to which is pivotally attached one" end of a rod 34. The other end of the 'rod 34 is adjustably'secured to the yoke or bifurcated .rod head 35, which is pivotallyIcohhected by a, pin 36, to. the free end of the'lower lifter bar or knife 20;

' On the" upper end ofthe-rock shaft 30 is fast a bevel pinion 37, see Fig.1, which meshes with and is driven by a bevel gear segment 38, see Fig. 2, which has its hub 38 in this instance loosely mounted on a stud 39. secured-to a lug or projection 1 on the dobby frame '1. Extending out from the hub 38? of the bevel gear segment 38, is an arm 38", which has an elongated slot 38" to adjustably receive a stud 39, which is pivotally-connected'to the upper end of' a rod 40, see Fig. '2. The lower end of the rod 40 is connected to some driven part of the-loom, not shown. to have anintermittent movement communicated thereto at regular intervals.

'llhrough the vertical movement of the rod'40, and the movement of the arm 38";

and the bevel gear segment 38 and gear 37. a rocking movement is communicated to the vertically extending shaft 30, and through arm 29 and connector 27, to the upper lifter bar 19, and arm 32 and connector 34, to the lower-lifter bar 20, at the rear of the A' movement is communito move simultaneously in or out in their guide slots, and turn on their pivot points on the opposite end of the dobby.

It will be understood that the details of construction of my improvements may be varied if desired.

Having thus described my invention, What I claim as new and desire to secure'by Letters Patent is 1. In a dobby, harness levers having a pivotal movement, hooks operatively connected thereto, a pair of lifter bars for operating said hooks, said bars pivotallyconnected at one end to a stationary part, and means, connected with a driven part of'the 100111, to impart to the other ends of said lifter bars a back and forth movement about their pivotal points.

2. In a dobby, harness levers having a pivotal movement, hooks operatively con-- nected thereto, a pair of lifter bars for operatmg said hooks, said bars pivotally connected at oneend to a stationary part, and means, including a rocker shaft, and connect-ions therefrom to the other ends of said lifter bars, to impart a back and forth movement thereto about their pivotal points.

3. In a dobby, harness levers having a pivotal movement, hooks operatively connected thereto, a pair of lifter bars for operating said hooks, said bars pivotally connected at one end to a stationary part, and

means, connected to a driven part of the loom, to impart a simultaneous movement to the other ends of said lifter bars.

- 4. In a ,dobby, a harness lever having a pivotal movement, two hooks 'operatively connected With said harness lever, one pat tern indicator lever to control the operation of both of said hooks, said indicator lever having a separate pattern indicator surface for each of said hooks, one of said surfaces being placed in advance of the other, a pattern chain, having a series of indicators to cooperate with each of said surfaces, and

means to cause one of a series of said indicators to operate against one of said surfaces for one pick, and to cause one indicator of the other series to operate against the other indicator surface for the next pick of the loom.

5. In a dobby, a harness'lever having a. 

